如何在父项中单击按钮时将数据从子项传递到父项

<template>
  <div>
    <button @click="passDataToParent">传递数据到父项</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      dataToPass: '要传递的数据'
    };
  },
  methods: {
    passDataToParent() {
      this.$emit('pass-data-to-parent', this.dataToPass);
    }
  }
};
</script>

<template>
  <div>
    <ChildComponent @pass-data-to-parent="receiveDataFromChild" />
    <div>接收到的数据：{{ receivedData }}</div>
  </div>
</template>

<script>
import ChildComponent from './ChildComponent.vue';

export default {
  components: {
    ChildComponent
  },
  data() {
    return {
      receivedData: ''
    };
  },
  methods: {
    receiveDataFromChild(data) {
      this.receivedData = data;
    }
  }
};
</script>